MASMBJ7.0A Equivalent & Substitute Parts

Part Overview

The MASMBJ7.0A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 7V reverse standoff voltage with a 12V maximum clamping voltage and 50A peak pulse current capability in a DO-214AA (SMB) package. The part maintains active product status with military-grade qualification per MIL-PRF-19500. Substitute parts are necessary when the primary manufacturer part is unavailable, when alternative sourcing is required for supply chain continuity, or when design flexibility permits selection from qualified equivalent devices meeting identical electrical and mechanical specifications.

Substiute Parts

MASMBJ7.0A

Microchip TechnologyIn Stock: 1093MASMBJ7.0A Datasheet

Current PartRFQ

SMBJ7.0A-13

Diodes IncorporatedIn Stock: 903SMBJ7.0A-13 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MASMBJ7.0A is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Voltage - Reverse Standoff (Typ): 7V
• Voltage - Breakdown (Min): 7.78V
• Voltage - Clamping (Max) @ Ipp: 12V
• Current - Peak Pulse (10/1000µs): 50A
• Power - Peak Pulse: 600W
• Type: Zener
• Unidirectional Channels: 1

Mechanical Equivalence Criteria:

• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount

Environmental & Compliance Criteria:

• Operating Temperature Range: -65°C to 150°C (TJ) minimum
• RoHS Status: Non-compliant (matching primary part)
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

The substitute part SMBJ7.0A-13 from Diodes Incorporated meets all electrical and mechanical equivalence criteria. This part is identified as a direct manufacturer equivalent within the SMBJ series base product family. The operating temperature range of the substitute (-55°C to 150°C) encompasses the critical upper temperature limit but has a higher minimum temperature specification than the primary part.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (MASMBJ7.0A): The MASMBJ7.0A maintains active product status with military-grade qualification per MIL-PRF-19500, ensuring long-term availability and compliance with defense and aerospace standards. This part is recommended for applications requiring sustained supply chain access and military-grade certification.

Substitute Part Selection (SMBJ7.0A-13): The SMBJ7.0A-13 from Diodes Incorporated provides electrical and mechanical equivalence across all critical parameters. However, this part is listed as discontinued at DiGi Electronics, indicating reduced availability through standard distribution channels. The operating temperature minimum of -55°C (versus -65°C for the primary part) represents a narrower temperature range suitable for applications not requiring extended low-temperature operation below -55°C.

Compliance Considerations: Both parts share identical RoHS non-compliance status, REACH unaffected status, and moisture sensitivity classification, ensuring consistent compliance posture in applications where these certifications are specified.

Frequently Asked Questions (FAQ)

Q: What makes SMBJ7.0A-13 an equivalent substitute for MASMBJ7.0A?

A: The SMBJ7.0A-13 matches all critical electrical parameters: 7V reverse standoff voltage, 7.78V minimum breakdown voltage, 12V maximum clamping voltage, 50A peak pulse current, and 600W peak pulse power. Both parts are unidirectional Zener TVS diodes in DO-214AA (SMB) surface-mount packages with identical moisture sensitivity and REACH compliance status.

Q: Are there differences in operating temperature ranges between these parts?

A: Yes. The MASMBJ7.0A operates from -65°C to 150°C, while the SMBJ7.0A-13 operates from -55°C to 150°C. The substitute part has a higher minimum temperature specification. Applications requiring operation below -55°C must use the primary MASMBJ7.0A part.

Q: Can SMBJ7.0A-13 be used in military or aerospace applications?

A: The SMBJ7.0A-13 does not carry military-grade qualification per MIL-PRF-19500. Applications requiring military-grade certification must use the MASMBJ7.0A. The substitute part is suitable for general-purpose industrial and commercial applications meeting the specified electrical and mechanical requirements.

Q: What is the significance of the "discontinued at DiGi Electronics" status for SMBJ7.0A-13?

A: This status indicates the part is no longer actively stocked through DiGi Electronics distribution. While the part may remain available through other channels or direct manufacturer sources, procurement lead times and availability may be limited. The primary MASMBJ7.0A is recommended for applications requiring assured long-term supply.

Q: Are the package dimensions identical between these parts?

A: Both parts use the DO-214AA (SMB) package designation, which specifies identical physical dimensions and pin configurations. They are mechanically interchangeable in surface-mount PCB layouts.

Q: Do both parts have the same RoHS compliance status?

A: Yes. Both MASMBJ7.0A and SMBJ7.0A-13 are RoHS non-compliant and REACH unaffected, ensuring consistent compliance documentation for applications where these certifications are specified.